公开(公告)号：US20220030223A1

公开(公告)日：2022-01-27

申请号：US17496001

申请日：2021-10-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Han GAO ,  Haitao YANG

IPC: H04N19/105 ,  H04N19/137 ,  H04N19/132 ,  H04N19/159 ,  H04N19/70 ,  H04N19/176

Abstract: The disclosure relates to a method of coding implemented by a decoding device, comprising: obtaining a value of a maximum number of merging motion vector prediction, MVP, candidates for a current block, wherein the current block is predicted using intra block copy, IBC mode; setting a value of a MVP index to zero, when the value of the maximum number of MVP candidates for the current block is equal to one; obtaining a motion vector of the current block according to the MVP index and a candidate list; obtaining prediction samples values of the current block according to the motion vector of the current block.

公开(公告)号：US20210344910A1

公开(公告)日：2021-11-04

申请号：US17369350

申请日：2021-07-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG ,  Jianle CHEN ,  Lian ZHANG

IPC: H04N19/107 ,  H04N19/157 ,  H04N19/176 ,  H04N19/593 ,  H04N19/186

Abstract: An image prediction method, apparatus, and system, a device, and a storage medium are provided. The method includes: (401) obtaining a split mode of a current node, where the current node is an image block in a coding tree unit in a current image; (402) determining, based on the split mode of the current node and a size of the current node, whether the current node satisfies a first condition; and (403) when it is determined that the current node satisfies the first condition, performing intra prediction on all coding blocks belonging to the current node, to obtain predictors of all the coding blocks belonging to the current node.

公开(公告)号：US20210306644A1

公开(公告)日：2021-09-30

申请号：US17345556

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/159 ,  H04N19/137 ,  H04N19/132 ,  H04N19/82 ,  H04N19/176

Abstract: This application discloses an inter prediction method and apparatus. The method includes: determining a plurality of first picture blocks in a to-be-processed picture block based on a preset picture split width, a preset picture split height, and a width and a height of the to-be-processed picture block; separately performing bi-directional optical flow prediction on the plurality of first picture blocks to obtain a predictor of each first picture block; and obtaining a predictor of the to-be-processed picture block with a combination of the predictors of the plurality of first picture blocks. The apparatus includes a determining module, a prediction module, and a combination module. In this application, complexity of implementing inter prediction can be reduced, and processing efficiency can be improved.

公开(公告)号：US20210227229A1

公开(公告)日：2021-07-22

申请号：US17224326

申请日：2021-04-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang MA ,  Jianle CHEN ,  Haitao YANG

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/132 ,  H04N19/186 ,  H04N19/176

Abstract: An intra prediction method using a cross component liner prediction mode (CCLM), includes: obtaining neighboring luma samples of a luma block; obtaining a mean luma value of the neighboring luma samples; obtaining neighboring chroma samples of a current chroma block, wherein the current chroma block corresponds to the luma block; obtaining a mean chroma value of the neighboring chroma samples; calculating a second linear model coefficient based on a first linear model coefficient, the mean luma value, and the mean chroma value; and obtaining a predictor for the current chroma block based on the first linear model coefficient and the second linear model coefficient. The method can increase the accuracy of the second linear model coefficient, and correspondingly increase the accuracy of the predictor for the current chroma block.

公开(公告)号：US20210185351A1

公开(公告)日：2021-06-17

申请号：US17188691

申请日：2021-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huanbang CHEN ,  Ting FU ,  Haitao YANG

IPC: H04N19/52 ,  H04N19/577

Abstract: A motion information candidate list construction method includes: performing a first processing process on all neighboring image blocks of a current image block until a quantity of candidate motion information sets in a candidate motion information list is equal to a first preset value or all the neighboring image blocks are traversed; then traversing at least two extra to be selected motion information sets, and storing, in the candidate motion information list, an extra to be selected motion information set that satisfies a preset condition, until the quantity of candidate motion information sets in the candidate motion information list is equal to a preset quantity value or the extra to be selected motion information sets are traversedextra to be selected motion.

公开(公告)号：US20210176462A1

公开(公告)日：2021-06-10

申请号：US17180274

申请日：2021-02-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/30 ,  H04N19/176

Abstract: This disclosure discloses a method for obtaining a candidate motion vector list, an apparatus, an encoder, and a decoder. The method for obtaining a candidate motion vector list comprises: when a first candidate picture block is encoded/decoded and an inter prediction mode is used, determining whether a reference picture of the first candidate picture block is the same as a reference picture of a current block; and constructing a candidate motion vector list of the current block based on a determining result; when the reference picture of the first candidate picture block is different from the reference picture of the current block, the MV of the first candidate picture block is not used to construct the list. Implementing this disclosure can reduce complexity of a motion information derivation process, and improve coding efficiency.

公开(公告)号：US20180131948A1

公开(公告)日：2018-05-10

申请号：US15861218

申请日：2018-01-03

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Feng Wu ,  Fangdong Chen ,  Houqiang Li ,  Zhuoyi Lv ,  Haitao YANG

IPC: H04N19/176 ,  H04N19/179 ,  H04N19/61 ,  H04N19/573 ,  H04N19/55

CPC classification number: H04N19/176 ,  H04N19/179 ,  H04N19/46 ,  H04N19/55 ,  H04N19/573 ,  H04N19/58 ,  H04N19/61 ,  H04N19/91

Abstract: The present disclosure provides a reference image encoding method, including: encoding sequence, to obtain a reconstructed image of a first and second reference images; determining whether a local area in the second reference image is suitable for updating first reference image; determining whether the first reference image is updated; when the first reference image is not updated, and it is determined the second reference image is suitable for updating the first reference image, replacing a pixel value of a corresponding area or a related area in the first reference image with a pixel value of the local area in the second reference image; and compiling, into the bitstream.

公开(公告)号：US20180103274A1

公开(公告)日：2018-04-12

申请号：US15837594

申请日：2017-12-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bing ZENG ,  Zexiang MIAO ,  Chen CHEN ,  Shuyuan ZHU ,  Yin ZHAO ,  Haitao YANG

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/137 ,  H04N19/176

CPC classification number: H04N19/86 ,  H04N19/102 ,  H04N19/117 ,  H04N19/137 ,  H04N19/176 ,  H04N19/82

Abstract: The present disclosure provide a deblocking filtering method and a deblocking filter. The method includes: determining, according to a current pixel value of a to-be-filtered pixel in a picture block and pixel values of pixels in a first neighbouring partition of the to-be-filtered pixel, a first filtering offset value of the to-be-filtered pixel; performing prediction on the pixel value of the to-be-filtered pixel according to pixel values of pixels in a second neighbouring partition of the to-be-filtered pixel to obtain a prediction value of filtered value of the to-be-filtered pixel; and determining an actual filtered value of the to-be-filtered pixel according to the current pixel value, the first filtering offset value, and the prediction value of filtered value. disclosure

公开(公告)号：US20170078696A1

公开(公告)日：2017-03-16

申请号：US15362477

申请日：2016-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xin HUANG ,  Haitao YANG

IPC: H04N19/593 ,  H04N19/129

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/124 ,  H04N19/129 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182

Abstract: According to intra-frame predictive coding and decoding methods based on template matching, an array scanning method and apparatus, and an apparatus that are disclosed in embodiments of the present disclosure, templates of at least two shapes are used to calculate predicted pixel values of a to-be-predicted unit. Templates of different shapes can represent different textures; when a correlation between a texture of a template of a shape and a texture of a to-be-predicted unit is low, a template of another shape may be selected and used, and a matching degree between a texture of a template and a texture of a to-be-predicted unit can be increased. In this way, an optimal predicted pixel value is determined from at least two predicted pixel values, and accuracy of the optimal predicted pixel value is higher than accuracy of a predicted pixel value determined by using a template of a single shape.

Abstract translation: 根据基于模板匹配的帧内预测编码和解码方法，阵列扫描方法和装置以及在本公开的实施例中公开的装置，使用至少两个形状的模板来计算预测像素值 预测单位。 不同形状的模板可以表示不同的纹理; 当形状的模板的纹理与待预测单元的纹理之间的相关性低时，可以选择和使用另一形状的模板，并且模板的纹理与纹理之间的匹配度 可预测的单位可以增加。 以这种方式，从至少两个预测像素值确定最佳预测像素值，并且最佳预测像素值的精度高于通过使用单个形状的模板确定的预测像素值的精度。

公开(公告)号：US20170034510A1

公开(公告)日：2017-02-02

申请号：US15294498

申请日：2016-10-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao YANG ,  Bin LI ,  Houqiang LI ,  Jiantong ZHOU

IPC: H04N19/11 ,  H04N19/186 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593

Abstract: Embodiments of the present invention provide an encoding or decoding method and apparatus. The method includes: extracting first information in a bitstream; determining a chroma component intra prediction mode according to the first information; when the chroma component intra prediction mode cannot be determined according to the first information, extracting second information in the bitstream; and determining the chroma component intra prediction mode according to the second information, where the first information includes information for indicating whether the chroma component intra prediction mode is a DM mode or an LM mode, the second information is used to indicate a remaining mode as the chroma component intra prediction mode, and the remaining mode is one of available chroma component intra prediction modes other than a mode that may be determined according to the first information.

Abstract translation: 本发明的实施例提供一种编码或解码方法和装置。 该方法包括：提取比特流中的第一信息; 根据第一信息确定色度分量帧内预测模式; 当色度分量帧内预测模式不能根据第一信息确定时，提取比特流中的第二信息; 以及根据所述第二信息确定色度分量帧内预测模式，其中所述第一信息包括用于指示所述色度分量帧内预测模式是DM模式还是LM模式的信息，所述第二信息用于将剩余模式指示为 色度分量帧内预测模式，并且剩余模式是可以根据第一信息确定的模式之外的可用色度分量帧内预测模式之一。